Metal car-roof.



W. A. BREWER.

METAL CAR ROOF.

APPLICATION FILED NOV. 28, 1913 Patented Mar. 2, 1915.

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METAL cannoor.

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Patented Mar. a, rare.

Application filed November 28, 1913. Serial No. 803,448.

To all whom'it may concern of'the city of Pittsburgh, in the county ofAllegheny and State of Pennsylvania, have invented a new'and usefulImprovement in Metal Car-Roofs, of which the following 1s aspecification.

The invention relates to roof structures composed of metal roof sheetssupported on the sheathing boards or roof substructure of a railway car.

The object of theinvention i s'a watertight car roof which will not 0 topieces when subjected to the wear an tear of service.

A further object of the invention is a sheet metal car roof which can'be securely fastened in place upon a car, and which can be cheaply madeand readilyrepaired and replaced.

Other objects of the invention appear in connection with the followingdescription, and the invention is more particularly defined in theappended claims.

The invention consists in the roof sheet, joint strip, cover andfastenings therefor, and in the combinations of the several parts withthe roof substructure, as hereinafter described.

In order that a clear understanding of the invention may be had,there'a're shown in the accompanying drawings examples of theapplication thereof to a car roof.

In the drawings, in which like characters designate like parts in theseveral views, h

Figure 1 is a transverse vertical cross section of the ridge portion ofa freight carroof, showing a running board partly in side elevation;Fig. 2 is a lengthwise vertical cross section of the roof along theridge taken on a line at right angles to Fig. 1; Fig. 3 is a transversevertical cross section through the eaves of the car roof shown in Fi 1and 2; Figs. 1 and 5 are an end View 05 the roof sheet ,and an end viewof the joint strip, respectively; Fig. 6 is an end view of a roof sheethaving a joint strip ortion integral therewith; and Fig. 7 is a en'thwise vertical cross section at the ridge of a roof equippedwith roofsheets like that shown in Fig. 6.

The principal members of the roof are wide metal roof sheets 11extending crosswise of the'car from came to eaves and supported on theroof sheathing 12. The caves ends of the roof sheets are doubled under,

the rebent portions 13 being hooked into similarly rebent margins 14 offlashing strips 15 overl ing the ends of the roof sheathing boards. Theouter ends of the roof sheets-terminate short of the ends of theroofboards, and together with the flashing strips, lie in rabbets in theupper sides of'the endsof the roof boards. The eaves flashing stripshave their outer margins turned down over the eaves ends of the roofsheathing boards and securely nailed to fasciaboards 16 which are boltedto the side plates 17. These eaves flashing strips project inward 'overthe upper ends of the side sheathing boards 19 and fascia boards 16, and"their inner rebent margins 14 not only prevent water from passing underthe eaves ends of the roofsheets, but also hold the eaves ends of'theroof sheets on the roof.

The side margins of the roof sheets are doubled under, and the edgeportions 20 of the sheets overlapping the doubled under portions 21 arebent up at an angle of slightly less than 90 degrees from the plane ofthe sheets. The doubled under margins 21 of the roof sheets divergeslightly from the bent up portions, and also stand at nearly rightangles to the plane of the sheets. The doubled portions form inverted U-sha e marginal flanges or ribs.

he roof sheets are spaced apart length- Wise of the car and joint strips22 are laid'in the spaces between them, the joint strips aving upstandinmarginal flanges 23, which are positioned under the marginal flanges 21of the roof sheets. The ends of the joint strips are turned under, therebent portions 24 thereby formed being hooked into'the rebent portions14 of the flashing strips, as shown in Fig. 3.

Inverted channel .shape seam covers 25 are arranged over the jointstrips. The lower edges 27 of the vertical side walls 26 substructureatthe ridge by means of iron 33 surrounding the holes in the joint stripsthrough which the bolts 30 pass. These holes have upturned margins 34for preventing water from creeping into the car at these points.

Sheet metal shields 35 are placed across the running board saddles,covering the holes for the bolts 30. The running boards 36 are arrangedabove the shields, and are nailed or otherwise secured to the gunningboard saddles. The thimbles and bolts together form a pivotal securingmeans for the joint strips and seam covers, restraining them fromlateral bodily movement on the roof substructure while permitting thejoint stripsto have suflicient pivotal movement to enable them toaccommodate themselves to the racking and twisting of the car inservice. The seam covers clamp the roof sheets down on the substructure,and prevent them from raising ofl' the roof, at the same time permittingthem limited lateral movement on the roof sub-structure. The sidemarginal flanges and eaves flanges prevent the root sheets from creepintoo tar on the root.

The roof sheet 37 illustrated in Figs. 6 and 7 is similar to the roofsheet 11, having rehent ends 13 and upstanding side flanges 20, 91forming an inverted V-shape flange along one side margin. The oppositeside margin of the sheet has an upstanding fold or corrugation 38 spacedfrom its edge and parallel with it, and a straight upstanding flange 39along its edge. The portion of the sheet 40 between the corrugation 38and flange 39 is similar to the joint stri 22, having a flanged hole 41at the ridge or the securing bolt, and rebent eaves end flanges 4:2 forengaging with the flange 14 of the eaves flashing 15. The flange 39 isarranged under the U flange of the adjacent sheet, and a seam cover 25is placed over both in the same way as is illustrated in Figs. 1 to 5.

One advantage of the construction illustrated in Figs. 6 to 7 is thatthe roof sheets are each securely fastened to the roof substructure atthe ridge near one side margin by the bolts 30, and thus are kept fromcreeping ofl the root. The fastening is at one point only, and permitsof pivotal movement of the'sheet, and the corrugation 38 provides someflexibility in the sheet itself, whereby the sheet is enabled toaccommodate itselt to the twisting of the car in serv- Although twoembodiments of the invention have been described in full, the inventionis not restricted thereto.

ll claim the following as my invention:

1. In a car roof, metal roof sheets having main portions extending fromcaves to eaves maoeva and each provided with inverted U-shapeflanges'along a side margin, inverted channel-shape seam covers spanningthe marginal flanges of adjacent roof sheets, and resting upon the mainportions thereof, sheet metal channels adjacent to the side margins ofsaid roof sheet main portions, and each having a marginal flangeprojecting up under the U-shape flange of the main portion of anadjacent roof sheet to form a flexible watertight joint therewith, saidseam covers covering the open tops of said channels and having end wallsclosing the ends thereof, and pivotal securing means for said channelsat the ridge, said roof sheets and channels being free to more upon theroot substructure at other joints.

2. ln a cal-root, in combination witha roof covering comprising rootsheets extending from caves to eaves, and connectible by flexible jointsalong their side margins, seam covers spanning said joints out ofcontact therewith, and arranged to bear on said root covering adjacentthereto, ridge bolts passing through said seam covers and root covering,thimbles surrounding said ridge bolts and bearing on the root coveringand inclosing the bolt holes therein, said thimbles extending throughsaid seam covers, and means associated with said bolts for closing thetops of said thimbles and clamping said thimbles and seam covers uponsaid root covering.

3. lln a car roof, in combination with a roof covering comprising rootsheets extending from eaves to eaves, and connected by joints alongtheir side margins, seam covers spanning said joints out of contacttherewith, ri ge bolts passing through said seam covers and rootcovering, thimbles surrounding said ridge bolts and bearing on the roofcovering and inclosing the bolt holes therein, said thimbles extendingthrough said seam covers, and means associated with said bolts forclosing the tops of said thimbles and clamping said thimbles upon saidroot covering.

l. lln a car roof, in combination with a roof covering comprising roofsheets extending from eaves to caves, and connected by joints alongtheir side margins, seam covers spanning said joints out of contacttherewith, ridge bolts passing through said seam covers and roofcovering, thimbles surrounding said ridge bolts and bearing on the roofcovering and inclosing the bolt holes therein, said thimbles extendingthrou b. said seam covers, and running board sa dles arranged on saidseam covers and provided with recesses on their under sides to receivesaid thimbles, said ridge ,bolts securing said running board saddles andthimbles in place.

5. A metal car root comprising root sheets each of which has an invertedU-shaps flange projecting up from and overhanging one side margin, thevertical sides of said flange being spaced apart, and a straight flangeprojecting up from the opposite side margin, the U-shape flange of onesheet inclosing the straight flange ofthe next sheet, an invertedU-shape corrugation formed in each sheet intermediate said flanges andparallel therewith, said corrugation having its sides spaced apart,securing means for said roof sheet positioned in the channel betweensaid flange and corrugation, and an inverted channehshape seam coverstraddling said flange and corrugation and cooperating therewith to forma watertight joint.

6. A metal car roof comprising roof sheets, each of which has aninvertedU- shaped flange projecting up from and overhanging one sidemargin, and a straight flange projecting up from the opposite sidemargin, said straight flange being of less height than said U-shapeflange, the U-shape flange of one sheet inclosing flange or" the nextsheet, an inverted U-shape corrugation formed in each sheet intermediatesaid flanges and parallel therewith, said the straight corrugation beingof approximately the same height as said straight flange and formingtherewith a gutter, holes for securing bolts in said gutter and aninverted channel-shape seam cover straddling said flange and corrugationand cooperating therewith to form a watertight joint.

7. A roof sheet for a metal car roof, said roof sheet extending fromcaves to eaves and having an inverted U-shape flange projecting up fromand overhanging one side margin, and a straight flange projecting upfrom the opposite side margin thereof, an inverted U-shape corrugationformed in the sheet intermediate said flanges and parallel'therewith,said corrugation being near to said straight flange, and a flanged bolthole in said roof sheet between said corru gation and straight flange atthe ridge.

Signed at Pittsburgh, Pa, this 21st day. of November, 1913.

WILLIAM A. BREWER.

Witnesses:

EDWARD T. VAUGHN, JOHN B. DESMOND.

